I would wait untill i was 23 or 25. But if you do go ahead and cycle.

Test Enanthate for 16 weeks or Cypionate. 600mg a week.
Deca 400mg a week 1-10
Dball 40mg week 1-5.

Winny is not needed.

If you keep the diet in check it will be very lean gains, with some water bloat but you can take adex to counteract that so it wont be bad.

After the cycle you would run clomid and Nolvadex. Hcg if you want. I always just run the clomid and nolva